Challenge and Opportunites of Power Battery 1.Performance and Safety 2.Cost Reduction 3.Battery RecyclingFrom the viewpoints of environmental preservation, recovery of major components or valuable resources, and provision of raw materials, the battery recycling is highly desirable inInstitute ofpresent time or the future. Beijing either the Technology

“中国废旧电池回收体系”是在政府的规范引导下、通过 多种渠道、多种方式、集合多种社会多种资源体，所共同 搭建起的一种可以将废旧电池有效环保回收、无害化处理、 资源化再生，并能自我存续和持续固定的一种资源循环利 用体系模式。Under the guidance of the government’s regulations and specifications, wasted battery recycling system in China is a self-survival and continued fixed resource recycling system model . It supplies an effective way to recycle, reduce and reuse for wasted batteries.

Beijing Institute of Technology

根据回收所针对的主体的不同，可分为“上游”和“下游”两类According to different recycle subjects, it can be divided into "upstream" and "downstream”

Summary of recycling processes or treatment methods for the components of lithium-ion batteries

A single recycling process can only achieve the destination of recovering a part of components or can only be one step of a whole procedure for recycling spent LIBs. Therefore, combination of several single recycling processes is necessary to recycle or recover the main components from spent LIBs.

Fig. 1. SEM images of different cathode materials: (a) the dismantled cathodic material from a spent LIB, (b) the cathodic material after treatment with NMP, (c) the cathodic material after dismantling and calcination at 700 °C for 5 h and (d) the leach residues.

Fig. 2. Flow sheet for the recovery of Co and Li from spent Li-ion batteries using DL-malic acid as a leachant

? Bio-hydrometallurgical processes have been gradually replacing the hydrometallurgical one due to their higher efficiency, lower costs and few industrial requirements. ? Using special bacteria which utilized elemental sulfur and ferrous ion as energy source to produce metabolites like sulfuric acids and ferric ion in the leaching medium.

生物淋滤--液膜萃取法工艺流程

Morphology

Beijing Institute of Technology

固液比和硫源浓度对金属离子的生物溶释效率影响Effect of S/L and Sulfur concentration on leaching efficiency of metals in Bio-leaching700